Did you have a Job lined up before you moved there originally, or did you move first and find work later?
You can do it either way.
The best way is fly out on a tourist visa and then find a job. That way you can see what you'll be getting into and meet the boss and all that.
Setting up a job from the US works in some countries, in other countries they will only hire people who show up in person, because so many people flake out on flying across the world when it's go time.
It depends exactly which industry you work in too. You can PM me if you want any specific info.